Turkey, NATO's southern flank, shares a border with ISIS extremists. For years, that border has been easy to cross, allowing foreign fighters to stream into Syria. Now, with ISIS on the rampage, Turkey is trying to shut down the border, but it may be too late.

Updated

05/04/2014 - 4:00pm

The forces of Syria's President Assad are raining bombs on the nation's biggest city, Aleppo. Rebel-held neighborhoods are systematically being bombed from the air. But the devices are not precisely aimed, and fall randomly on civilians.

The UN Secretary General Ban Ki-Moon says Syria needs to fully cooperate with the preliminary accord which outlines the rules for the deployment of a UN observer mission to the country. But despite the truce, attacks are on the rise.

Updated

05/04/2014 - 4:00pm

The forces of Syria's President Assad are raining bombs on the nation's biggest city, Aleppo. Rebel-held neighborhoods are systematically being bombed from the air. But the devices are not precisely aimed, and fall randomly on civilians.

Turkey, NATO's southern flank, shares a border with ISIS extremists. For years, that border has been easy to cross, allowing foreign fighters to stream into Syria. Now, with ISIS on the rampage, Turkey is trying to shut down the border, but it may be too late.

The UN Secretary General Ban Ki-Moon says Syria needs to fully cooperate with the preliminary accord which outlines the rules for the deployment of a UN observer mission to the country. But despite the truce, attacks are on the rise.